THYRISTOR VOLTAGE CONVERTER FOR CONTROLLING INDUCTION MOTOR SPEED

摘要

FIELD: electrical engineering; phase-controlled variable-speed induction-motor drives. SUBSTANCE: additional stator-current feedback and device for limiting control signal applied to input of thyristor control unit are introduced to ensure steady operation of electric drive throughout entire speed control range. Experimental studies of offered improvements have shown positive results. EFFECT: improved reliability and stability in operation of converter throughout entire motor speed control range.